Question

(-3)m+⁴×(-3)⁸=(-3)⁷find m value
​

Answer 1

Answer:

${ (- 3)}^{m + 4} \times {( - 3)}^{8} = {( - 3)}^{7} \\ {( - 3)}^{m + 4} = \frac{ {( - 3)}^{7} }{ {( - 3)}^{8} } \\ {( - 3)}^{m + 4} = {( - 3)}^{7 - 8} \\ {( - 3)}^{m + 4} = {( - 3)}^{ - 1} \\ m + 4 = - 1 \\ m = - 1 - 4 \\ \large{ \boxed{ m = \underline{ \underline{ \bf - 5}}}}$